Vibe.TUI.DiffBlock (vibe v0.2.1)

Renders diff-like TUI lines with semantic coloring and intra-line word diff.

Summary

@spec diff_lines(
  [String.t()],
  atom() | String.t() | nil,
  pos_integer(),
  Vibe.Terminal.Theme.t()
) :: [
  IO.chardata()
]